Two short proofs on total domination

Allan Bickle. Two short proofs on total domination. Discussiones Mathematicae Graph Theory, 33(2):457-459, 2013. [doi]

@article{Bickle13,
  title = {Two short proofs on total domination},
  author = {Allan Bickle},
  year = {2013},
  url = {http://www.discuss.wmie.uz.zgora.pl/gt/index.php?doi=10.7151/dmgt.1655},
  researchr = {https://researchr.org/publication/Bickle13},
  cites = {0},
  citedby = {0},
  journal = {Discussiones Mathematicae Graph Theory},
  volume = {33},
  number = {2},
  pages = {457-459},
}